Polymerizable compound and polymer therefrom
    1.
    发明授权
    Polymerizable compound and polymer therefrom 失效
    可聚合的化合物和聚合物

    公开(公告)号:US5442096A

    公开(公告)日:1995-08-15

    申请号:US84966

    申请日:1993-07-02

    摘要: A homopolymer or a copolymer comprises a polymerizable compound represented by formula (I):A--X--COCOOR.sub.1 (I)wherein R.sub.1 represents a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group or an aryl group; X represents an oxygen atom, a sulfur atom, --COO-- or --NR.sub.5 -- wherein R.sub.5 is a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group; A represents a C.sub.3 -C.sub.18 alkenyl, alkynyl, alkenylaryl or alkenylaralkyl group, or a group represented by: ##STR1## wherein R.sub.2 and R.sub.3, which may be the same or different, independently represent a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group; Y represents an oxygen atom or --NR.sub.4 -- wherein R.sub.4 represents a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group; n is an integer of 1 to 5; m is an integer of 1 to 10; and 1 is 0 or an integer of 1 to 20;with the proviso that if Y is present, X is not --NR.sub.5 --. Additionally, disclosed are processes of preparing the homopolymer or copolymer as well as the polymerizable compound.

    摘要翻译: 均聚物或共聚物包含由式(I)表示的可聚合化合物:其中R 1表示氢原子,C 1 -C 5烷基或芳基的A-X-COCOOR 1(I) X表示氧原子,硫原子,-COO-或-NR5-,其中R5是氢原子或C1-C5烷基; A表示C 3 -C 18烯基,炔基,链烯基芳基或链烯基烷基,或由相同或不同表示的基团独立地表示氢原子或C1-C5烷基; Y表示氧原子或-NR4-,其中R4表示氢原子或C1-C5烷基; n为1〜5的整数, m为1〜10的整数。 1为0或1〜20的整数, 条件是如果存在Y,则X不是-NR 5 - 。 此外,公开了制备均聚物或共聚物以及可聚合化合物的方法。

    Polymerizable compound and polymer therefrom
    3.
    发明授权
    Polymerizable compound and polymer therefrom 失效
    可聚合化合物和聚合物

    公开(公告)号:US5169896A

    公开(公告)日:1992-12-08

    申请号:US861549

    申请日:1992-04-01

    摘要: A curable composition comprises a compound having at least two hydroxyl groups and a homopolymer or a copolymer of a polymerizable compound represented by formula (I):A--X--COCOOR.sub.1 (I)wherein R.sub.1 represents a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group or an aryl group; X represents an oxygen atom, a sulfur atom, --COO-- or --NR.sub.5 -- wherein R.sub.5 is a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group; A represents a C.sub.3 -C.sub.18 alkenyl, alkynyl, alkenylaryl or alkenylaralykyl group, or a group represented by: ##STR1## wherein R.sub.2 and R.sub.3, which may be the same or different, independently represent a hydrogen atom or a C.sub.1 -C.sub.5 alkyl groups; Y represents an oxygen atom or --NR.sub.4 -- wherein R.sub.4 represents a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group; n is an integer of 1 to 5;m is an integer of 1 to 10; and 1 is 0 or an integer of 1 to 20;with the proviso that if Y is present, X is not --NR.sub.5 --.

    摘要翻译: 可固化组合物包含具有至少两个羟基的化合物和由式(I)表示的可聚合化合物的均聚物或共聚物:AX-COCOOR1(I)其中R1表示氢原子,C1-C5烷基或 芳基; X表示氧原子,硫原子,-COO-或-NR5-,其中R5是氢原子或C1-C5烷基; A表示C 3 -C 18烯基,炔基,烯基芳基或链烯基烷基,或由下式表示的基团:其中R 2和R 3可以相同或不同,独立地表示氢原子或C 1 -C 5烷基; Y表示氧原子或-NR4-,其中R4表示氢原子或C1-C5烷基; n为1〜5的整数, m为1〜10的整数。 1为0或1〜20的整数, 条件是如果存在Y,则X不是-NR 5 - 。

    Process for producing a diaphragm for acoustic appliances
    4.
    发明授权
    Process for producing a diaphragm for acoustic appliances 失效
    用于声学器具的隔膜的制造方法

    公开(公告)号:US5182846A

    公开(公告)日:1993-02-02

    申请号:US770224

    申请日:1991-10-02

    摘要: In production of a beryllium type diaphragm used for acoustic appliances such as speakers and microphones, formation of a crude beryllium plate by means of vacuum deposition is followed by hot cross rolling and hot pressing. Vacuum deposition well reduces production of undesirable impurities such as BeO and hot rolling increases density of the beryllium crystal structure obtained by the preceding vacuum deposition, both for betterment in acoustic and mechanical characteristics of the product such as sound pressure and mechanical strength.

    摘要翻译: 在用于诸如扬声器和麦克风的声学设备的铍型隔膜的生产中,通过真空沉积形成粗铍板,然后进行热交叉轧制和热压。 真空沉积可以很好地减少生产不需要的杂质,如BeO,并且通过前面的真空沉积获得的热轧增加铍晶体结构的密度,从而改善产品的声学和机械特性,如声压和机械强度。

    Beryllium window incorporated in X-ray radiation system and process of
fabrication thereof
    7.
    发明授权
    Beryllium window incorporated in X-ray radiation system and process of fabrication thereof 失效
    纳入X射线辐射系统的铍窗及其制造工艺

    公开(公告)号:US5161179A

    公开(公告)日:1992-11-03

    申请号:US661135

    申请日:1991-02-27

    IPC分类号: B23K35/00 G21K1/10

    CPC分类号: B23K35/002 G21K1/10

    摘要: A beryllium window comprises a disk-shaped beryllium plate containing beryllium as an essential element, a welding film partially merged into the outer peripheral portion of the beryllium plate and formed of a substance having at least one element selected from the group consisting of silver, gold, nickel and copper, and a reinforcing unit of a stainless steel, and the welding film is partially merged into the reinforcing unit, wherein the welding film fixes the beryllium plate to the reinforcing unit through diffusion welding so that the beryllium window is less deformative against heat stress.

    摘要翻译: 铍窗包括含有铍作为必需元素的盘状铍板,部分地并入铍板的外周部的焊接膜,由具有选自银,金, ,镍和铜以及不锈钢的增强单元,并且焊接膜部分地并入加强单元中,其中焊接膜通过扩散焊接将铍板固定到加强单元,使得铍窗对于 热应激。